Tank valve



J. 0. WILSON TANK VALVE Filed Oct. 26, 1920 Patented Feb. 17, 1925.

' UNITED STATES PATENT OFFICE.

JAMES O. WIISON, OF JERSEY CITY, NEW JERSEY, ASSIGiN'OR. TO THE TEXASCOM- PANY, OF NEW YORK, N. Y., A CORPORATION OF TEXAS.

TANK VALVE.

Application filed October 26, 1920, Serial No. 419,618.

T 0 all whomit may concern:

Be it known that I, JAMES O. VILSON, a citizen of the United States, anda resident of Jersey City, county of Hudson, and State of New-Jersey,have invented certain new and useful Improvements in Tank Valves, ofwhich the following isa specification.

The present inventionrelates to tank cars, and the objects of theinvention-are to provide a simple and efl'ective form of dis chargevalve for such cars which will be located and thereforeprotected by thetank and which will furthermore enable complete discharge and drainageof the tank.

In the drawing accompanying and forming a. part of this specification, Ihave dis,- closed the invention embodied in'a practical and commercialform, but wish it understood that the same may be modified in variousrespects without departure from the true spirit and scope of theinvention as hereinafter defined and claimed.

Figure 1 is a fragmentarysectional portion of the tank of a tank carequipped with my invention.

Figure 2 is a broken sectional view of the valve mechanism on anenlarged scale and taken on a plane transversely of the tank.

Figure 3 is a fragmentary or part sectional plan view of the valve andits operating mechanism.

Figure 4 is a cross sectional view of the valve on substantially theplane of the line 4-4 of Figure 2.

In Figurel I have shown how the valve which is designated generally bythe reference character 5, is located wholly within and thereforemounted and protected by the tank '6. This tank I have shown as havingthe usual dome 7 closed by a manhole cover 8, and I have shown the valveas operated by the rod or stem 9 extended upwardly into the dome andthere provided with a handle 10 by which the valve is operated. Thishandle traverses. an are or segment 11 and s secured in the valveo 11compound or valve closed compound positions by hooks l2, 13, havingsquare shanks 14 slidingly guided in correspondingly shaped openings 1nthe segment 11. and having round or pointed ends 15 designed to entercorrespondingly sha ed openings in the se ent. When one of 1; eseinverted U-shape clips is hooked over the handle as in Figure 2, it

will be seen that the valve will be retained in the desired relation,and this form of fastening allows for the necessary expansion Near itsupper end the "alve rod 9 is usually I guided by being pivotally engagedin the arm of a bracket 16 extending inwardly from the Wall of the tankof the dome.

The valve proper is in the form of an inverted frusto-conical hollowbody 17 rot-atably seated in a correspondingly shaped casing 18 having abase flange 19 sha to fit the concavity of the tank and suitably securedthereto as by means of rivets 20.

The valve casing is usually fitted witha liner 21 of brass or othernon-corrosive ma terial which may be secured in place as by means of thethreaded connection at 22 and by means of the cap 23 which closes thetop of the valve. casing. The valve is formed with an outlet opening oropenings 24 in one or opposite sides of the same, and the valve casingis constructed with a similar opening or openings 25.

The valve openings 21, the valve casing openings 25 and the base flange19 are all cut down to a level below the lowest point in the tankbottom, as I have indicated parcut down portions form in effect drainagechannels extending inwardly through the base flange into the interior ofthe valve (Figure 4) to insure complete drainage of the tank contentswhen the valve is open.

The head of the valve is closed as I have indicated at 27 in Figure 2,and in this same view I have shown that this'closed top of the valvecarries an angular socket 28 for the correspondingly shaped lower end ofthe valve actuating rod. This lower end of the valve rod may be securedin the socket as by means of a pin 29 so that the valve may be slightlylifted off its seat by an upward pull on the handle. The valve isnormally yieldingly held to its seat .by a spring 30 seated in the capof the valve cas1n and bearing against the uplper end of t e socketextension of the va ve.

- valve furthermore is of strong sturdy construction and with all itsother advanta es can be produced and installed relatively 1nexpensively.In order that the valve may be seated as low as possible in the bottomof.

the tank, I have shown the base flange of the valve casing as shoulderedat 33 to permit the same to fit down into the 'opemng 34 providedtherefor in the bottom of the tank.

It will be noted that in my invention the valve mechanism is independentof the outlet chamber 35 which may be of any ordinary or usualconstruction. This makes it possible to apply the invention to tanks now,in use and without requiring anytspecial alterations. v

A slight lost motion is usually provided in the connection between thevalve rod 9 and the valve. Thus in Figure 2 I have shown the opening 36in the valve rod as somewhat larger than the pin 29. This connection isnot so loose, however, but what the valve rod will lift or ease thevalve oif of its seat. This lifting movement of the valve is limited intheillustration by the engagement of cooperating shoulders between thehub of the valve and the wall of the valve casing as indicated at 37.The motion allowed the valve is enough to free the valve in case itshould become stuck, but preferably is not enough to permit anyappreciable leakage of oil. The cooperating shoulders at 37 also providea means to prevent the valve being lifted from its seat b the insertionof a rod or tube out through the outlet chamber 35. The movement asstated is only sufiicient to release the valve without permitting anyappreciable escape of liquid. The lost motion connection between thevalve and valve rod also revents the transmission of stress, strengt orundue vibration to the valve, and also takes care somewhat of the tankexpansion.

What I claim is: 1. In a tank *valve, a valve casing havin an invertedsubstantially frusto-conica or openings in the side thereof, an invertedsubstantially frusto-conical hollow valve body fitted in said seat,having a closed upper end and discharge opening or openings in the sidethereof to register with the discharge opening or openings of the valveseat, said openings having registering drain channels arranged to standat least as. low as the lowest point of the tank, and the valve casinghaving a base flange seated in the bottom of the tank and provided witha channel forming an extension of the drain channel aforesaid.

2. In a tank valve, a valve casing having an inverted substantiallyfrusto-conical valve seat and provided with an opening or openin'gs inthe side thereof, an inverted substantially frusto-conical hollow valvebody fitted in said seat, having a closed upper end and dischargeopening or openings in the side thereof to register with the dischar eopening or openings of the valve seat, sald openings having registeringdrain channels arranged to stand at least as low as the lowest polnt ofthe tank, a valve actuating rod engaged with the closed top of the valveand a spring in the valve casing above said closed top for yieldinglyforcing the valve to its seat, said rod having a handle at its upperend, a segment and a hook slidingly engaged-with said segment andarranged to fit over said handle.

3. In a tank car, a rotatable valve mounted in the bottom of the tank, avalve actuating rod extending from the said valve to the upper portionof the tank, a segment about the upper portion of said rod, an operatinghandle on said rod above the segment and hooks vertically slidable onthe segment and arranged to be engaged over the handle for securing thevalve in predetermined relations.

In witness whereof, I hereunto set my hand this 22nd day of October,1920.

JAMES 0. WILSON.

valve seat and provided with an opening a

